| 摘要 |
<p>PURPOSE:To eliminate the need for a card control discrimination circuit and to simplify the circuit constitution by synchronizing the processing of an operation request data of a control section circuit and that of an operation request signal of a coding section circuit. CONSTITUTION:An operation request data outputted from a control section 2 is converted into a request signal of a same form of an operation request signal outputted from a coding section 1 and the input timing and priority with an operation request signal outputted from the coding section 1 are discriminated at a same point of time, the one is selected and a signal to select the operation enabling signal corresponding to the signal is returned to the outputting section. Thus, the operation request data from the section 2 inputted asynchronously is discriminated synchronously with the operation request signal of the section 1.</p> |
